Driving scheme for cholesteric liquid crystal display

Details Driving scheme for cholesteric liquid crystal display Driving scheme for cholesteric liquid crystal display

2004-05-14

2008-10-07

Lewis, David L (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C345S089000, C345S097000, C345S690000

Reexamination Certificate

active

07432899

ABSTRACT:
A drive scheme is described for a display capable of gray scale. Multiple two-level pulses are used in conjunction with dynamic relaxation techniques to write pixels ON or OFF and to adjust the gray level of pixels. Only two voltage levels are used, a maximum level U, and a minimum level 0. This reduces the complexity of the electronics so that the only one voltage generator is needed for the display.

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A. Rybalochka, V. Sorokin, S. Valyukh, A. Sorokin, “Dynamic Drive Scheme For Fast Addressing Cholesteric Displays”, 2000, pp. 818-821.
A. Rybalochka, V. Sorokin, S. Valyukh, A. Sorokin, “Simple Drive Scheme for Bistable Cholesteric LCDs”, 2001, pp. 882-885.
Anonymous, “Polymer Stabilized Cholestric Liquid Crystal”, Apr. 21, 2004, whole document.

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